Transport electron through a quantum wire by side-attached asymmetric quantum-dot rings

A. Rostami; S. Zabihi; H. Rasooli S.; S. K. Seyyedi

doi:10.1117/12.904402

28 November 2011 Transport electron through a quantum wire by side-attached asymmetric quantum-dot rings

A. Rostami, S. Zabihi, H. Rasooli S., S. K. Seyyedi

Proceedings Volume 8308, Optoelectronic Materials and Devices VI; 83080O (2011) https://doi.org/10.1117/12.904402
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

The electronic conductance at zero temperature through a quantum wire with side-attached asymmetric quantum ring (as a scatter system) is theoretically studied using the non-interacting Anderson tunneling Hamiltonian method. We show that the asymmetric configuration of QD- scatter system strongly impresses the amplitude and spectrum of quantum wire nanostructure transmission characteristics. It is shown that whenever the balanced number of quantum dots in two rings is substituted by unbalanced scheme, the number of forbidden mini-bands in quantum wire conductance increases and QW-nanostructure electronic conductance contains rich spectral properties due to appearance of the new anti-resonance and resonance points in spectrum. Considering the suitable gap between nano-rings can strengthen the amplitude of new resonant peaks in the QW conductance spectrum. The proposed asymmetric quantum ring scatter system idea in this paper opens a new insight on designing quantum wire nano structure for given electronic conductance.

Citation Download Citation

A. Rostami, S. Zabihi, H. Rasooli S., and S. K. Seyyedi "Transport electron through a quantum wire by side-attached asymmetric quantum-dot rings", Proc. SPIE 8308, Optoelectronic Materials and Devices VI, 83080O (28 November 2011); https://doi.org/10.1117/12.904402

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